Trends in birth rates in the United States since 1870.
| Hlavní autor: | |
|---|---|
| Médium: | Kniha |
| Jazyk: | English |
| Vydáno: |
Baltimore
Johns Hopkins Press
1958.
|
| Edice: | The Johns Hopkins University studies in historical and political science
ser. 76, no. 1 |
| Témata: |